US4662270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door jamb post and valved vent passage with heater
Assignee: KOLPACK IND Inc
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Filing: 1985-08-30
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Granted: 1987-05-05
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Expires: 2005-08-30
Abstract
Abstract A door jamb for a cold storage room is provided with a tranverse passage for passage of air from the exterior into the interior of the cold storage room. A thin metal flap valve, specifically of stainless steel, is placed at the exterior end of the passage, seated on a flat plate. An electric heater in the passage prevents the valve from being immobilized in the closed position due to frozen condensation.
Inventors
- 👤 R. Charles Fiddler
- 👤 Nathan L. Coleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:35
CPC Classifications
F; F25; F25D; F25D17/00; F25D17/04; F25D17/042; F25D17/047
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
182 words
In a door jamb for a cold storage room comprising wall panels, a door jamb and a door supported by the door jamb, (a) said door jamb comprising a hollow post having a longitudinally extending interior plate and a longitudinally extending exterior plate in spaced apart, generally parallel relationship and transverse longitudinal elements jointed to said plates, (b) means defining a passage through said post transversely of said plates and between said longitudinal elements, (c) a valve for said passage comprising a valve seat and a valve element, said valve seat being a plate extending transversely of said passage and having an opening therethrough in alignment with said passage, said valve element being a thin sheet of resilient material extending across said opening in said valve seat in the closed position of said valve, and means for attaching said valve element to said valve seat for movement of said valve to an open position in which parts of said valve element are spaced from said valve seat and extend into said passage, and (d) means in said passage for heating said valve.
Claim 2
Dependent Claim
182 words
In a door jamb for a cold storage room comprising wall panels, a door jamb and a door supported by the door jamb, (a) said door jamb comprising a hollow post having a longitudinally extending interior plate and a longitudinally extending exterior plate in spaced apart, generally parallel relationship and transverse longitudinal elements jointed to said plates, (b) means defining a passage through said post transversely of said plates and between said longitudinal elements, (c) a valve for said passage comprising a valve seat and a valve element, said valve seat being a plate extending transversely of said passage and having an opening therethrough in alignment with said passage, said valve element being a thin sheet of resilient material extending across said opening in said valve seat in the closed position of said valve, and means for attaching said valve element to said valve seat for movement of said valve to an open position in which parts of said valve element are spaced from said valve seat and extend into said passage, and (d) means in said passage for heating said valve.
Claim 3
Dependent Claim
15 words
The aparatus of claim 1, said means defining said passage comprising a tube of plastic.
Claim 4
Dependent Claim
30 words
The apparatus of claim 2, said means defining said passage having a transverse mounting flange at each end thereof, and means for attaching each said mounting flange to said tube.
Claim 5
Dependent Claim
23 words
The apparatus of claim 3, said last mentioned means comprising a collar extending from each said mounting flange and telescoped over said tube.
Claim 6
Dependent Claim
17 words
The apparatus of claim 1, said attaching means located at an upper part of said valve element.
Claim 7
Dependent Claim
15 words
The apparatus of claim 5, said valve element being a thin sheet of stainless steel.
Claim 8
Dependent Claim
33 words
The apparatus of claim 1, said valve seat comprising a portion covering an upper part of the passage in said passage defining means, said attaching means attaching said valve element to said portion.
Claim 9
Dependent Claim
15 words
The apparatus of claim 7, said valve element being a thin sheet of stainless steel.
Claim 10
Dependent Claim
16 words
The apparatus of claim 8, said stainless steel valve element having a thickness of approximately 0.002".
Claim 11
Dependent Claim
15 words
The apparatus of claim 1, said valve element being a thin sheet of stainless steel.
Claim 12
Dependent Claim
16 words
The apparatus of claim 10, said stainless steel valve element having a thickness of approximately 0.002".
Claim 13
Dependent Claim
18 words
The apparatus of claim 1, said heating means comprising an electric heat source in said passage defining means.
Claim 14
Dependent Claim
11 words
The apparatus of claim 12, said heat source being a resistor.
Claim 15
Dependent Claim
18 words
The apparatus of claim 13, said heat source located at approximately the middle of said passage defining means.
Claim 16
Dependent Claim
133 words
In combination, (a) a hollow post of a door jamb for a cold storage room, the post having spaced, substantially parallel longitudinally extending interior and exterior plates, spaced transverse longitudinal elements joined to said plates and a pair of aligned openings in said plates, (b) a tube extending transversely of said plates between said longitudinal elements and having a passage therethrough in alignment with said openings, (c) means for securing said tube to said plates, (d) a valve for said tube comprising a valve seat and a valve element, (e) means in said tube for heating said valve element, and (f) conductors connectd to said heating means and extending from said tube in the hollow post between said plates and said elements, said post adapted to have plastic foam in the hollow thereof.
Claim 17
Dependent Claim
133 words
In combination, (a) a hollow post of a door jamb for a cold storage room, the post having spaced, substantially parallel longitudinally extending interior and exterior plates, spaced transverse longitudinal elements joined to said plates and a pair of aligned openings in said plates, (b) a tube extending transversely of said plates between said longitudinal elements and having a passage therethrough in alignment with said openings, (c) means for securing said tube to said plates, (d) a valve for said tube comprising a valve seat and a valve element, (e) means in said tube for heating said valve element, and (f) conductors connectd to said heating means and extending from said tube in the hollow post between said plates and said elements, said post adapted to have plastic foam in the hollow thereof.
Claim 18
Dependent Claim
12 words
The combination of claim 15, said tube being of electrically non-conducting material.
Claim 19
Dependent Claim
68 words
The combination of claim 15, said valve seat comprising a plate with an opening, means for securing said valve seat plate to said tube with the opening aligned with said passage, said valve element being resilient metal sheet, means for supporting said sheet in adjacent inward relationship to the valve seat and engaging said sheet at an upper protion thereof, the valve element depending from said supporting means.
Claim 20
Dependent Claim
16 words
The combination of claim 17, said valve element being a thin sheet of resilient stainless steel.
Claim 21
Dependent Claim
16 words
The combination of claim 15, said valve element being a thin sheet of resilient stainless steel.
Claim 22
Dependent Claim
128 words
In combination with a cold storage room, (a) a door jamb comprising a post, (b) said post defining a longitudinally extending hollow therein and adapted to be substantially filled with plastic foam, (c) said post having therein means defining a pair of aligned openings for passage of air through said post from the exterior to the interior of said cold storage room, (d) a tube having a passage therethrough, (e) means for mounting said tube in said post and in communication with said openings therein, (f) a valve for said tube comprising a valve seat and a valve element, (g) means in said tube for heating said valve element, and (h) conductors connected to said heating means and extending at least partially through the hollow in said post.
Claim 23
Dependent Claim
128 words
In combination with a cold storage room, (a) a door jamb comprising a post, (b) said post defining a longitudinally extending hollow therein and adapted to be substantially filled with plastic foam, (c) said post having therein means defining a pair of aligned openings for passage of air through said post from the exterior to the interior of said cold storage room, (d) a tube having a passage therethrough, (e) means for mounting said tube in said post and in communication with said openings therein, (f) a valve for said tube comprising a valve seat and a valve element, (g) means in said tube for heating said valve element, and (h) conductors connected to said heating means and extending at least partially through the hollow in said post.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-04 | 1990-11-03 | 1991-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-04 | 1994-11-03 | 1995-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-04 | 1998-11-03 | 1999-05-05 | $7700.00 | Window Closed / Lapsed |